China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (6): 1791-1799.doi: 10.16431/j.cnki.1671-7236.2020.06.018

• Genetics and Breeding • Previous Articles     Next Articles

Analysis on Disease Resistance of Immunity+ Bulls' Daughters

AN Tao1,2, ZHANG Hailiang1, WANG Yachun1   

  1. 1. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2019-10-15 Online:2020-06-20 Published:2020-06-20

Abstract: The objective of current study was to explore daughters' disease resistance of Immunity+ bulls selected for disease resistance.A total of 5 112 individual disease records were collected from 3 dairy farms that using both frozen semen from Immunity+ bulls and ordinary bulls.A Logistic regression was used to analyze the impacts of birth season of calves,age of cows and sire type (Immunity+ bull or ordinary bull) on the risk of some common diseases in dairy cattle.The results showed that birth season and age had significant impacts on the risk of various diseases in calves and cows (P<0.05),respectively.The sire type had a significant impact on the risk of mastitis in some populations (P<0.05).Compared with the daughters of ordinary bulls,the daughters of Immunity+ bulls had a lower risk of mastitis.In conclusion,the breeding technology of selecting for disease resistance in Immunity+ bulls was effective,and their progeny had better disease resistant ability,especially on resistance to mastitis,which provided a feasible technical route to improve the disease resistance and profitability of dairy population by selective breeding.

Key words: disease; mastitis; resistance breeding; Immunity+ bulls

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